Nonslipping rubber sole



July 22, 1947. DUFQUR 2,424,226

NONSLIPPING RUBBER SOLE Filed July 5, 1941 2 Sheets-Sheet l July 22, 1947. E. DUFOUR 2,424,226

NONSLIPPING RUBBER SOLE Filed July 5, 1941 2 Sheets-Sheet 2 Ill/ a;

Patented July 22, 1947 NONSLIFPING; RUBBER SOLE Eric Dufour, Aubonne, Switzerland Application July 3, 1941, Serial No. 401,917 In Switzerland November 1, 1940 Section 3, Public Law 690, August 8, 1946. Patent Expires November 1, 1960 3 Claims.

This invention relates to improvements in a non-slipping rubber sole having nail shaped cleats, characterized by the fact that it is fitted with metallic frameworks, flush with the surface of the rubber, being intended to prevent a user from slipping.

The accompanying drawing shows, by way of example, a form of execution of said sole according to the invention.

Figure 1 is a section view from underneath of a first shape.

Figure 2 is a view in profile in accordance with II of Fig. 1.

Figure 3 is a view in plan of a first shape of a framework.

Figure 4 is a View in profile in accordance with IIII of Figure 1.

Figure 5 is a View in profile of a second shape of a framework.

Figure 6 is a view in plan of this latter.

Figure 7 is a View showing the working of the sole.

Figure 8 is a section view from underneath of a second shape of the sole.

Figure 9 is a profile view in accordance with IIIIII of Figure 8.

Figure 10 is a profile view in accordance with IVIV of Figure 8.

Figure 11 is a view of a framework.

The non-slipping rubber sole I shown only in part on Figure 1 comprises cleats 2 in the shape of nails; the frameworks shown on Figs. 2 to 6 are coated in this sole. The framework 3 comprises two elements 4 and 5 in a plate of steel set perpendicularly between them, soldered together; the element 5 placed in a, cleat 6, in the shape of a nail is in corrugated iron and possesses openings I, in which the rubber penetrates when it is vulcanized; the element 4 coated in the sole itself ll, possesses openings 8, which are also filled by the rubber. This element could also be made in corrugated iron. The extremity 9 of element 5 is flush with the surface H] of the rubber of the cleat 6; it is intended to prevent the user from slipping on a wet and polished surface.

It is foreseen in another shape of execution, to cut in two the loose extremity of element 5 to obtain two parts bent in opposite directions.

The framework 4, comprises two elements 12 and I3 set perpendicular to a third one l4, these elements I2 and I3 being coated in the nail shaped cleats l5 and I6, whilst the element [4 is sunk in the sole itself I I. The framework I! (Fig. 5) made up of a single element in corrugated iron comprising two parts l8 and I9 bent back in opposite directions, also possesses openings 20; these latter work with the corrugated iron to maintain the framework in place. A cleat 2|, fitted with a framework 22 (Fig. 7) of the sole rection of the dart 23, works as follows:

The part 24 of the cleat 22 bends slightly in the direction of the effort as well as the extremity 25, of the framework of which the edge 26, penetrates into the treading surface and prevents from slipping.

The non-slipping rubber sole 28 shown in part on Fig. 8 comprises cleats 29. Between these latter, the frameworks 39 and 31 are disposed as shown on Figs. 9 to 11 to prevent the user from slipping. The frameworks 39 are made up with two points soldered to a metallic plate 32, this latter being fixed to the sole 28; this plate 32 could also be coated in the rubber of the sole 28 when it is vulcanized; it is also foreseen, in a different way of execution, to fix the metallic plate 32 to the leather sole of the shoe.

The framework BI is made of a metallic blade soldered to a plate 33; the loose end 34 of this blade shows teeth 35 capable to penetrate in the surface on which the user walks to prevent slipping.

The top of the points 3| and that of the teeth 35 is sensibly on the same level as the top of the cleats 29.

It is also seen that each framework could be made in a single metallic point, or by a blade the loose end of which would be upright.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

1. An anti-skid arrangement for shoes including a rubber sole, a plurality of rubber cleats integral therewith, and a metallic framework for the cleats comprising a base member imbedded in the sole and a vertical corrugated member imbedded in and extending throughout the length of the cleats and having its outer end flush with the outer surface of the cleat.

2. An anti-skid arrangement as claimed in claim 1, in which the base member is also corrugated.

3. An anti-skid arrangement as claimed in claim 1, in which the metallic framework comprises a single element, the lower end of which is split and bent in opposite directions to form the base member.

ERIC DUFOUR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,379,646 Mueller et al. May 31, 1921 817,977 Leibert Apr. 17, 1906 1,211,619 Oehring Jan. 9, 1917 FOREIGN PATENTS Number Country Date 397,049 Great Britain Aug. 17, 1933 

